Sorption of Iridium Complexes with Supported Ionic Liquids

Bodnár, Nóra; Буслаева, Т. М.; Эрлих, Г.В.; Maryutina, Tatiana A.; Копылова, Е. В.; Mingalev, P. G.

doi:10.1134/s0036023621040045

Cited by 2 publications

(1 citation statement)

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“…Therefore, there is a need to conduct numerous experiments, which, in turn, generates a stream of studies reported, the number of which has increased immeasurably in the last 5-10 years, especially in the field of analytical chemistry in order to prepare samples of complex composition, such as ores, rocks, and refining products. This circumstance is largely facilitated by the undeniable advantages of sorption over other methods, in particular, the high rate of reaching equilibrium and selectivity [1][2][3][4]. Among the works on the sorption of noble metal ions, the vast majority refers to the sorption of Pd(II) ions from hydrochloric acid or aqueous chloride solutions.…”

Section: Introductionmentioning

confidence: 99%

Complexation during Sorption of Palladium(II) Ions by Chemically Modified Silica

Буслаева

Ehrlich

Volchkova

et al. 2022

Russ. J. Inorg. Chem.

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Complexation during the sorption of palladium(II) ions from chloride media by chemically modified silicas has been studied. Due to the use of mesoporous silicas with an average pore diameter of >10 nm for their synthesis, these sorbents do not change their volume in aqueous and organic media and have high mass transfer characteristics. The dependences of the sorption of Pd(II) ions from chloride solutions under static conditions as a function of time, HCl concentration, and Cl– ion have been obtained; sorption isotherms are constructed. Based on the experimental data, a conclusion has been made about the coordination mechanism of sorption, which has been proved by a combination of spectral methods (IR, UV-VIS, and X-ray photoelectron spectroscopy). The structure of sulfur-containing sorbents and their complexes with palladium has been modeled using the DFT M06 quantum-chemical method in the def2tzvp basis in the gas phase and taking into account the H2O solvent. The performed calculations make it possible to substantiate the nature of the dependence of sorption on the acid concentration and to confirm the formation of palladium(II) complexes with bidentate coordination of ligands in the silica phase modified with thiosalicylic and mercaptoacetic acids.

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Section: Introductionmentioning

confidence: 99%